Zero bias anomaly in Andreev reflection spectroscopy
Abstract
Zero bias anomalies have been observed in point contact Andreev reflection spectroscopy using conventional superconductors, and they cannot be suppressed by a highly spin-polarized current. By systematically varying the size of the point contact, the anomalies are found to be evolved from conductance dips outside the superconducting gap. Furthermore, these anomalies, which depend on the size of the interface, are not intrinsic to the superconductors but due to a large resistance change when the contact region is driven to normal by an Oersted field.
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1388935
- Alternate Identifier(s):
- OSTI ID: 1330115
- Grant/Contract Number:
- SC0012670
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 120; Journal Issue: 16; Related Information: SHINES partners with University of California, Riverside (lead); Arizona State University; Colorado State University; Johns Hopkins University; University of California Irvine; University of California Los Angeles; University of Texas at Austin; Journal ID: ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; phonons; thermal conductivity; thermoelectric; spin dynamics; spintronics
Citation Formats
Gifford, J. A., Zhao, G. J., Li, B. C., Zhang, J., Kim, D. R., and Chen, T. Y. Zero bias anomaly in Andreev reflection spectroscopy. United States: N. p., 2016.
Web. doi:10.1063/1.4965983.
Gifford, J. A., Zhao, G. J., Li, B. C., Zhang, J., Kim, D. R., & Chen, T. Y. Zero bias anomaly in Andreev reflection spectroscopy. United States. https://doi.org/10.1063/1.4965983
Gifford, J. A., Zhao, G. J., Li, B. C., Zhang, J., Kim, D. R., and Chen, T. Y. Wed .
"Zero bias anomaly in Andreev reflection spectroscopy". United States. https://doi.org/10.1063/1.4965983. https://www.osti.gov/servlets/purl/1388935.
@article{osti_1388935,
title = {Zero bias anomaly in Andreev reflection spectroscopy},
author = {Gifford, J. A. and Zhao, G. J. and Li, B. C. and Zhang, J. and Kim, D. R. and Chen, T. Y.},
abstractNote = {Zero bias anomalies have been observed in point contact Andreev reflection spectroscopy using conventional superconductors, and they cannot be suppressed by a highly spin-polarized current. By systematically varying the size of the point contact, the anomalies are found to be evolved from conductance dips outside the superconducting gap. Furthermore, these anomalies, which depend on the size of the interface, are not intrinsic to the superconductors but due to a large resistance change when the contact region is driven to normal by an Oersted field.},
doi = {10.1063/1.4965983},
journal = {Journal of Applied Physics},
number = 16,
volume = 120,
place = {United States},
year = {Wed Oct 26 00:00:00 EDT 2016},
month = {Wed Oct 26 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
Superconductivity induced at a point contact on the topological semimetal tungsten carbide
journal, December 2019
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